Cita APA (7a ed.)

Simenon, G., & Baldick, R. (1972). Maigret at the crossroads (1st ed. in Penguin Books, reprint.). Penguin books.

Cita Chicago Style (17a ed.)

Simenon, Georges, y Robert Baldick. Maigret at the Crossroads. 1st ed. in Penguin Books, reprint. Harmondsworth: Penguin books, 1972.

Cita MLA (9a ed.)

Simenon, Georges, y Robert Baldick. Maigret at the Crossroads. 1st ed. in Penguin Books, reprint. Penguin books, 1972.